     (render [_]
       (let [cast! (om/get-shared owner :cast!)
             [rx ry] (om/get-state owner :mouse-pos)
-            camera (cursors/observe-camera owner)
             center (layers/center layer)]
         (dom/g #js {:className "arrow-handle-group"}
           (when (and rx ry)

                             :y2 ry
                             :markerEnd "url(#arrow-point)"})))
          (svg-element (assoc layer
                              :className (str "arrow-handle "
                                              (when (om/get-state owner :hovered?)
                                                "hovered "))

                                                  {:dest layer
                                                   :x (first (cameras/screen-event-coords e))
                                                   :y (second (cameras/screen-event-coords e))}))))
          (svg-element (assoc layer :className "arrow-outline"
                              :key (str (:db/id layer) "-outline"))))))))

(defn arrows [app owner]
  (reify
